anonhaven

CVE-2026-100244

HIGH CVSS 3.1: 7.5 EPSS 0.26%
Updated Oct 01, 2026
Exposure
Parameter Value
CVSS 7.5 (HIGH)
Affected Versions before 1.46.1
Type CWE-200 (Information Exposure)
Vendor Exposure
Public PoC No

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows Excavation. This issue affects Mediawiki - CentralAuth Extension: from * before 1.46.1, 1.45.5, 1.43.10.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v3.1

Weakness Type (CWE)

CWE-200 Information Exposure

References 2

https://gerrit.wikimedia.org/r/q/Ifd262c11300dd0355e177d6185bcd704d2720a47
c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
https://phabricator.wikimedia.org/T432789
c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
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